1. Binding to a manually chosen IP address is rarely needed. Go to Settings -> Advanced -> Network and set "Bind to IP" back to "Default".
2. Your log contains streaming sessions with dropped frames. This can only be caused by a failure in your internet connection or your networking hardware. It is not caused by OBS. Follow the troubleshooting steps at:
Dropped Frames and General Connection Issues.
1. Disable/uninstall StreamElements. If that doesn't fix it, then
2. Create a restream.io account, connect it to your Twitch and set OBS to stream to restream. If that doesn't fix it, then
3. Go to Settings > Advanced > Network and check the box next to the option that says "Dynamically change bitrate to manage congestion".